Inventor · disambiguated record
David Sheffield
Also filed as: SHEFFIELD DAVID · SHEFFIELD DAVID J · SHEFFIELD DAVID JOHN
6 granted patents·1 pending application·74 citations·filing 1974–2009
82Inventor score
Top patents by PatentIndex Score
7 records- 0168US4275583ABreakstem riveting tool with stem disposal deviceGILBERT TERENCE·Filed 1979·Granted Jun 30, 1981·22 cites·8 claims
- 0260US4116036AHydraulically operated riveting apparatusAERPAT AG·Filed 1977·Granted Sep 26, 1978·15 cites·2 claims
- 0357US4275582ABreakstem riveting tool with stem disposal deviceSHEFFIELD DAVID J·Filed 1979·Granted Jun 30, 1981·18 cites·5 claims
- 0448US4368838ABlind riveting machineAERPAT AG·Filed 1980·Granted Jan 18, 1983·11 cites·10 claims
- 0546US7575355B2Apparatus for illuminating channel letters and light boxesMEGAPULL INC·Filed 2007·Granted Aug 18, 2009·0 cites·16 claims
- 0644US3970225AValve for a fluid dispenserAVDEL LTD·Filed 1974·Granted Jul 20, 1976·8 cites·6 claims
- 0731US2009273945A1Modular, luminous, small form-factor solid-state lighting engineMEGAPULL INC·Filed 2009·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →